Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ...
Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from...
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ftdatacite:10.3929/ethz-b-000593587 2024-04-28T08:10:24+00:00 Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... Haghipour, Negar Eglinton, Timothy Vonk, Jorien Keskitalo, Kirsi Speetjens, Niek Overduin, Paul Westermann, Sebastian Miesner, Frederieke Sachs, Torsten Nitze, Ingmar Bröder, Lisa 2022 application/pdf https://dx.doi.org/10.3929/ethz-b-000593587 http://hdl.handle.net/20.500.11850/593587 en eng ETH Zurich article-journal Conference Item Text ScholarlyArticle 2022 ftdatacite https://doi.org/10.3929/ethz-b-000593587 2024-04-02T12:32:08Z Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from wetlands to barren mountainous areas. Part of the watershed undergoes abrupt permafrost thaw that releases particulate OC (POC) to the fluvial system. In this study, we couple landscape characteristics to river POC to better understand its spatial variability and the changes imposed on the watershed by permafrost thaw. We sampled POC in July-August 2019 in the Peel River main stem and its tributaries (total n=~120) and used carbon isotopes and lipid biomarkers to characterize its composition and trace its sources. Our first results indicate a compositional diversity within the watershed as POC ranges between <0.1 and 2.1 mg L-1, δ13C-POC from -36.7 to -26.5‰ and Δ14C-POC from -906.4 to -43.5‰. Ongoing changes ... : EGUsphere ... Text Arctic permafrost DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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English |
description |
Rapid warming of the Arctic is accelerating thaw of permafrost, which mobilizes organic carbon (OC). Remineralization of this carbon can contribute to further climate warming. The Peel River watershed is underlain by continuous and discontinuous permafrost and covers a diverse set of landscapes from wetlands to barren mountainous areas. Part of the watershed undergoes abrupt permafrost thaw that releases particulate OC (POC) to the fluvial system. In this study, we couple landscape characteristics to river POC to better understand its spatial variability and the changes imposed on the watershed by permafrost thaw. We sampled POC in July-August 2019 in the Peel River main stem and its tributaries (total n=~120) and used carbon isotopes and lipid biomarkers to characterize its composition and trace its sources. Our first results indicate a compositional diversity within the watershed as POC ranges between <0.1 and 2.1 mg L-1, δ13C-POC from -36.7 to -26.5‰ and Δ14C-POC from -906.4 to -43.5‰. Ongoing changes ... : EGUsphere ... |
format |
Text |
author |
Haghipour, Negar Eglinton, Timothy Vonk, Jorien Keskitalo, Kirsi Speetjens, Niek Overduin, Paul Westermann, Sebastian Miesner, Frederieke Sachs, Torsten Nitze, Ingmar Bröder, Lisa |
spellingShingle |
Haghipour, Negar Eglinton, Timothy Vonk, Jorien Keskitalo, Kirsi Speetjens, Niek Overduin, Paul Westermann, Sebastian Miesner, Frederieke Sachs, Torsten Nitze, Ingmar Bröder, Lisa Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... |
author_facet |
Haghipour, Negar Eglinton, Timothy Vonk, Jorien Keskitalo, Kirsi Speetjens, Niek Overduin, Paul Westermann, Sebastian Miesner, Frederieke Sachs, Torsten Nitze, Ingmar Bröder, Lisa |
author_sort |
Haghipour, Negar |
title |
Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... |
title_short |
Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... |
title_full |
Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... |
title_fullStr |
Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... |
title_full_unstemmed |
Particulate organic carbon composition and landscape characteristics in the Peel River Watershed, Canada ... |
title_sort |
particulate organic carbon composition and landscape characteristics in the peel river watershed, canada ... |
publisher |
ETH Zurich |
publishDate |
2022 |
url |
https://dx.doi.org/10.3929/ethz-b-000593587 http://hdl.handle.net/20.500.11850/593587 |
genre |
Arctic permafrost |
genre_facet |
Arctic permafrost |
op_doi |
https://doi.org/10.3929/ethz-b-000593587 |
_version_ |
1797578293774385152 |